steve nissan, the head of cardiology at the cleveland clinic. so we gave him a call and asked him to be in our film. he agreed. it is through him we started to learn more about the cleveland clinic as a model for health care. and in speaking with them, we met dr. cho and yyvonne osborne was one of dr. cho's patients. >> here's more of that story. >> i have lost since last year 21 pounds. >> oh, my gosh. she had bypass surgery at an early age, 27 cardiac catheterizations and well over seven s tents. thds an unbelievable amount of students -- stents and cardiac caths. i can't tell you how shocked we were when we saw her for the first time. here is a young lady whose diabetes was never well controlled, her cholesterol was never controlled. if someone had talked to her, i think many of her cardiocatheterizations and stents would not have bb necessary. >> that is an extreme case, but so many people have stents that don't need them. in fact, 97% of stents aren't helpful or useful. >> why do they do it? >> because that's what they are taught to do. it